CA2477521A1 - Procede de codage d'une sequence de bits de donnees, en particulier de transmission par interface hertzienne - Google Patents

Procede de codage d'une sequence de bits de donnees, en particulier de transmission par interface hertzienne Download PDF

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Publication number
CA2477521A1
CA2477521A1 CA002477521A CA2477521A CA2477521A1 CA 2477521 A1 CA2477521 A1 CA 2477521A1 CA 002477521 A CA002477521 A CA 002477521A CA 2477521 A CA2477521 A CA 2477521A CA 2477521 A1 CA2477521 A1 CA 2477521A1
Authority
CA
Canada
Prior art keywords
value
time slot
sequence
logical
data
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
CA002477521A
Other languages
English (en)
Inventor
Michael Cuylen
Dieter Horst
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2477521A1 publication Critical patent/CA2477521A1/fr
Abandoned legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
    • G06K7/10019—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers.
    • G06K7/10029—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers. the collision being resolved in the time domain, e.g. using binary tree search or RFID responses allocated to a random time slot
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/0723—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/0008—General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
    • G06K7/10297—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves arrangements for handling protocols designed for non-contact record carriers such as RFIDs NFCs, e.g. ISO/IEC 14443 and 18092

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Artificial Intelligence (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Near-Field Transmission Systems (AREA)
  • Dc Digital Transmission (AREA)

Abstract

L'invention concerne un procédé de codage d'une séquence de bits de données (B1-B5). Ces bits de données présentent une valeur logique "en circuit" ou "hors circuit" (1, 0) et sont organisés dans une séquence de trames de créneaux temporels (FR1-FR5), lesquelles trames contiennent des créneaux temporels (ZS11-ZS14) pouvant prendre une valeur "en circuit" ou "hors circuit" (Z1, Z0). Le codage s'effectue dans une trame de créneaux temporels, de sorte qu'une valeur "hors circuit" est préattribuée à au moins un créneau temporel, des valeurs "en circuit" ou "hors circuit" sont attribuées aux créneaux temporels libres, de manière à former la valeur logique "en circuit" ou "hors circuit" d'un bit de données, et au moins un créneau temporel présentant une valeur "hors circuit" suit un créneau temporel présentant une valeur "en circuit". Ladite invention concerne également un système d'identification (IS), équipé d'un appareil de lecture/écriture (SLG) et d'au moins une mémoire de données mobile (DT1-DT3), lequel système permet la mise en oeuvre dudit procédé. Cette invention offre l'avantage de permettre une détection de collision immédiate (C) lors du codage complémentaire d'un bit de données dans une trame de créneaux temporels correspondante. Ce procédé peut être mis en oeuvre, de façon avantageuse, dans une bande de fréquences ISM de 13,56 MHz pour une transmission de données sans contact par couplage inductif.
CA002477521A 2002-02-28 2003-02-17 Procede de codage d'une sequence de bits de donnees, en particulier de transmission par interface hertzienne Abandoned CA2477521A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10208731.8 2002-02-28
DE10208731 2002-02-28
PCT/DE2003/000480 WO2003073362A1 (fr) 2002-02-28 2003-02-17 Procede de codage d'une sequence de bits de donnees, en particulier de transmission par interface hertzienne

Publications (1)

Publication Number Publication Date
CA2477521A1 true CA2477521A1 (fr) 2003-09-04

Family

ID=27762500

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002477521A Abandoned CA2477521A1 (fr) 2002-02-28 2003-02-17 Procede de codage d'une sequence de bits de donnees, en particulier de transmission par interface hertzienne

Country Status (5)

Country Link
EP (1) EP1479029B1 (fr)
AT (1) ATE303635T1 (fr)
CA (1) CA2477521A1 (fr)
DE (1) DE50301097D1 (fr)
WO (1) WO2003073362A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7372364B2 (en) 2003-11-10 2008-05-13 3M Innovative Properties Company Algorithm for RFID security
WO2005059808A1 (fr) * 2003-12-17 2005-06-30 Siemens Aktiengesellschaft Dispositif de lecture/ecriture, systeme d'identification comprenant un dispositif de lecture/ecriture et des memoires de donnees mobiles, ainsi qu'utilisation d'un dispositif de lecture/ecriture

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4471345A (en) * 1982-03-05 1984-09-11 Sensormatic Electronics Corporation Randomized tag to portal communication system
DE19910875A1 (de) * 1999-03-11 2000-09-21 Siemens Ag System zur berührungslosen, seriellen Übertragung von Daten aus insbesondere schnell bewegten, mobilen Datenträgern, und bevorzugte Verwendungen des Systems

Also Published As

Publication number Publication date
EP1479029A1 (fr) 2004-11-24
ATE303635T1 (de) 2005-09-15
DE50301097D1 (de) 2005-10-06
WO2003073362A1 (fr) 2003-09-04
EP1479029B1 (fr) 2005-08-31

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Legal Events

Date Code Title Description
FZDE Discontinued